Let's start with a few reasons why people would not buy a diamond for an engagement ring. First and foremost, there is the question of cost. Some people believe that the cost of a diamond ring is prohibitively expensive. Others choose from a variety of alternative stones, such as precious and semi-precious coloured stones. When it comes to fancy colour diamonds, the price of a natural fancy colour diamond is out of most people's budgets. Some people still have apprehension about the unethical us